BMW X1 E84 Complete Vehicle

74
Technical training. Product information. BMW Service E84 Complete Vehicle

Transcript of BMW X1 E84 Complete Vehicle

Page 1: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 1/74

Technical training.Product information.

BMW Service

E84 Complete Vehicle

Page 2: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 2/74

General information

Symbols used

In this document, the following symbol/representation is used to provide a better understanding or tohighlight especially important information:

Contains important safety instructions and information that are required for proper system functionand must absolutely be followed.

Current applicability and country-specific models

Vehicles manufactured by the BMW Group satisfy the highest safety and quality requirements. Chang-ing requirements with respect to the protection of the environment, customer needs, design or engi-neering result in a continuous enhancement of systems or components. As a result, the contents of this document may differ from what is in the vehicles available for training.

This document in principle relates to left-hand drive vehicles in the European version. In vehiclesequipped with right-hand drive, some operating controls and components are located at positions oth-er than those depicted in the illustrations in this document. There may also be additional differencesassociated with market- or country-specific equipment packages.

Additional information sources

You can find additional information about the individual topics:

• In the Owner's Manual• In the Integrated Service Technical Application.

Contact: [email protected]

©2009 BMW AG, Munich

Reproduction, even in part, only with the written consent of BMW AG, Munich

The information contained in this document is part of the technical training provided by the BMWGroup and is intended for its trainers and participants in training sessions. Please refer to the current

information systems of the BMW Group for changes/additions to the technical data.Date of information:August 2009VH-23/International Technical Training

Page 3: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 3/74

E84 Complete VehicleTable of contents1. Introduction .............................................................................................................................................................................................................................................1

1.1. General information............................................................................................................................................................................................1

1.1.1. Model versions.........................................................................................................................................................................11.1.2. Silhouette comparison.................................................................................................................................................2

2. Body ......................................................................................................................................................................................................................................................................32.1. Dimensions......................................................................................................................................................................................................................3

2.1.1. Technical data............................................................................................................................................................................52.2. Bodyshell.............................................................................................................................................................................................................................5

2.2.1. Crash behavior..........................................................................................................................................................................72.3. Exterior....................................................................................................................................................................................................................................7

2.3.1. Front/rear system..................................................................................................................................................................72.3.2. Engine compartment......................................................................................................................................................92.3.3. Doors................................................................................................................................................................................................... 102.3.4. Exterior mirrors....................................................................................................................................................................122.3.5. Tailgate..............................................................................................................................................................................................122.3.6. Exterior lights..........................................................................................................................................................................13

2.4. Interior..................................................................................................................................................................................................................................162.4.1. Front seats ..................................................................................................................................................................................162.4.2. Rear seats ....................................................................................................................................................................................162.4.3. Panorama glass roof ....................................................................................................................................................17

2.4.4. Luggage compartment...........................................................................................................................................

182.5. Safety systems......................................................................................................................................................................................................192.5.1. Active safety.............................................................................................................................................................................192.5.2. Passive safety........................................................................................................................................................................20

3. Powertrain ..............................................................................................................................................................................................................................................213.1. Engine versions....................................................................................................................................................................................................21

3.1.1. Engine N20................................................................................................................................................................................213.1.2. Engine N55................................................................................................................................................................................21

3.2. Transfer case ............................................................................................................................................................................................................22

3.3. Automatic transmission.........................................................................................................................................................................223.3.1. GA6HP19TU............................................................................................................................................................................223.3.2. GA8HP45Z.................................................................................................................................................................................223.3.3. Automatic engine start-stop function..............................................................................................223.3.4. ECO PRO mode.................................................................................................................................................................23

3.4. Final drive.......................................................................................................................................................................................................................253.4.1. Rear axle final drive.....................................................................................................................................................253.4.2. Front axle differential...............................................................................................................................................25

3.5. Output shafts, front axle.........................................................................................................................................................................26

Page 4: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 4/74

E84 Complete VehicleTable of contents4. Chassis ........................................................................................................................................................................................................................................................29

4.1. Chassis...............................................................................................................................................................................................................................29

4.1.1. Chassis components ...............................................................................................................................................294.1.2. Front axle.......................................................................................................................................................................................304.1.3. Rear axle.........................................................................................................................................................................................344.1.4. Steering systems ..............................................................................................................................................................364.1.5. Brakes.................................................................................................................................................................................................364.1.6. Suspension/damping..................................................................................................................................................374.1.7. Wheels...............................................................................................................................................................................................37

4.2. Driving stability control systems...............................................................................................................................................374.2.1. Dynamic Stability Control DSC.................................................................................................................374.2.2. xDrive with transfer case......................................................................................................................................394.2.3. Performance Control..................................................................................................................................................464.2.4. Dynamic Cruise Control (DCC)..................................................................................................................49

5. General Vehicle Electronics .................................................................................................................................................................................505.1. Electrical system.................................................................................................................................................................................................50

5.1.1. Bus systems .............................................................................................................................................................................515.1.2. Vehicle circuit structure.........................................................................................................................................535.1.3. Energy management..................................................................................................................................................535.1.4. Installation locations of the system components..........................................................53

5.1.5. System components...................................................................................................................................................

565.1.6. Display and operating concept..................................................................................................................575.1.7. Driver assist systems.................................................................................................................................................60

5.2. Entertainment and communication......................................................................................................................................625.2.1. Infotainment..............................................................................................................................................................................625.2.2. Entertainment........................................................................................................................................................................63

6. Service Instructions ............................................................................................................................................................................................................686.1. Condition Based Service (CBS).................................................................................................................................................686.2. Diagnosis and program access...................................................................................................................................................68

Page 5: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 5/74

E84 Complete Vehicle1. Introduction

1

1.1. General information

The new BMW X1 launched in August 2012 was the first Sports Activity Vehicle SAV in the premiumcompact class. The BMW X1 follows the extremely successful tradition of the models BMW X5, BMWX3, and BMW X6. Their features and characteristics are available for the first time in a smaller vehicleclass.

The typical features of a BMW X-model combined with gracefully elongated proportions representsthe distinct character within the family of BMW X-models. The striking front view underlines the robustand powerful appearance of the BMW X1 by emphasizing the width.

BMW X1

1.1.1. Model versions

The new BMW X1 was offered in the following models for the US market introduction:

• BMW X1 xDrive35i with N55B30O0 (300 HP 300 lb-ft)• BMW X1 xDrive28i with N20B20O0 (241 HP and 258 lb-ft)• BMW X1 sDrive28i (rear wheel drive) with N20B20O0 (241 HP and 258 lb-ft)

Page 6: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 6/74

E84 Complete Vehicle1. Introduction

2

1.1.2. Silhouette comparison

In comparison to the two current models BMW X3 and BMW X5, an outer proportion geared towardsthe X was created for the BMW X1.

Silhouette comparison to BMW X3 and BMW X5

The increased head clearance as well as the additional space provided in the BMW X1 due to theraised seat position between sedans and X-vehicles (semi command feel) are clearly visible on the in-side as well.

Page 7: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 7/74

E84 Complete Vehicle2. Body

3

2.1. Dimensions

Dimensions

Dimensions

Page 8: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 8/74

E84 Complete Vehicle2. Body

4

Dimensions

BMW X1/E84 BMW X3/E83 BMW 3 SeriesSport Wagon E91

Length 4484mm 4565 mm 4520 mmWidth 1798 mm 1853 mm 1817 mmHeight 1545 mm 1674 mm 1417 mmWheelbase 2760 mm 2793 mm 2760 mmFront overhang 817 mm 816 mm 755 mmRear overhang 907 mm 954 mm 1005 mmFront track width 1500 mm 1524 mm 1500 mmRear track width 1529 mm 1549 mm 1528 mm

The raised seat position of the BMW X1 compared to E9x vehicles is +88 mm.

Page 9: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 9/74

E84 Complete Vehicle2. Body

5

2.1.1. Technical data

The most important BMW X1 data is compiled in the following tables.

Engine data Unit sDrive28i xDrive28i xDrive35i

Displacement cm3 1997 1997 2979

Number of cylinders in line 4 in line 4 in line 6Power kW/HP 241 241 300At RPM RPM 5000-6500 5000-6500 5800Torque Nm/lb-ft 350/258 350/258 300At RPM RPM 1250-4800 1250-4800 1300-5000Compression ratio ε 10:1 10:1 10.2:1Stroke mm 90.1 90.1 89.6Bore mm 84 84 84Acceleration 0 to 60mph

s 6.2 6.3 5.3

Weights Unit xDrive28i xDrive35i

Vehicle curb weightwithout driver

kg/lbs 1600 / 3527 1690 / 3726 1765 / 3891

Weight distribution(empty car)

% 50.6 49.4 47.9

Permissible gross ve-hicle weight

kg/lbs 2040 / 4497 2135 / 4707 2205 / 4861

Towing capacity kg/lbs TBD* TBD* TBD*

TBD* - To Be Determined (not available at this time)

For additional technical data on the BMW X1, refer to the Owner's Manual for the BMW X1 vehicle.

2.2. BodyshellThe bodyshell of the BMW X1 is based on the BMW 3 Series Sport Wagon xDrive chassis. Like thebody of the BMW 3 Series Sport Wagon, the body of the new BMW X1 is made from different kinds of steel and is fully galvanized.

Page 10: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 10/74

E84 Complete Vehicle2. Body

6

The following materials are used:

Bodyshell of BMW X1

Index Explanation

Steels1 DC04, DX54D,2 DX56D, HC 180BD, HC 180YD, HX180BD

3 HC 220BD, HC 220YD, HX 220BD, HX 220YD4 HC 260BD, HC 260LAD, HC 260YD5 HC 300BD, HC 300LAD, HC 300XD, HX 300BD,

HC 340LAD, HC 340X6 HC 380LAD, HC 400T(D)7 HC 420 420LA(D)8 HD 680C(D)9 HC 1000W(D)

Page 11: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 11/74

E84 Complete Vehicle2. Body

7

Index Explanation

Plastic10 Plastic

Miscellaneous11 Other metallic materials

2.2.1. Crash behavior

The BMW X1 features a stable passenger compartment that provides the occupants with the highestpossible level of safety in the event of a collision. This good crash behavior is achieved in particular byusing maximum strength steels in the pillar and node structures.

In the event of head-on collisions, side member structures that fold in a specific manner ensure thatthe crash energy is dissipated as evenly as possible. In the event of a head-on collision with minimaloverlap, specially designed cross member structures ensure that the acting forces are also transferredto the side of the vehicle opposite the impact.

Part of designing these structural features was to optimally coordinate the restraint system with thevehicle. In addition to front airbags for the driver and front passenger, the BMW X1 is equipped with adeformable steering column and belt tensioners with force limiters.

There is only a very short crumple zone for side collisions. To achieve a low occupant load, partic-ular attention must be paid to the lowest possible penetration depth. A major contribution to this ismade by the B-pillar designed from maximum strength sheet metal in combination with the doors thatfeature impact members which effectively reduce penetration of the doors into the interior. The sidestructure is achieved by optimally distributing the acting forces to the various load paths such as theA-pillar or the instrument panel cross member.

The rear deformation area is formed by two support profiles running longitudinally, the luggage com-partment floor, the rear trim panel, the rear side panels integrated into the side frame and various rein-forcements.

2.3. Exterior

2.3.1. Front/rear system

The front end meets the high requirements for pedestrian protection by providing corresponding de-formation spaces under the engine compartment lid as well as yielding hinge kinematics.

The rear bumper comes standard with attachment points for two towing lugs or the fixture for a bicyclecarrier available as an accessory.

The difference between the front and rear bumpers as well as the sill trim in the basic version and theX-line package is the painted individual parts. The individual part in the rear bumper is larger than inthe basic version, and two painted individual parts are added in the sill trim. The individual parts usedin the bumpers of the basic version are not painted but are made from silver-color material.

Page 12: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 12/74

E84 Complete Vehicle2. Body

8

Front bumper

Index Explanation

1 Front end2 Upper bumper trim3 Lower bumper trim

Rear bumper

Page 13: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 13/74

E84 Complete Vehicle2. Body

9

Index Explanation

1 Upper bumper trim2 Lower bumper trim3 Bumper cover

The additional third brake light is accommodated in the rear spoiler. The washer jet is not integrated inthe wiper as in the BMW 1 Series, but in the brake light, so that water is sprayed on the window fromtop to bottom. This results in an optimized cleaning function.

3. Brake light in rear spoiler

Index Explanation

1 Washer jet for rear window2 Brake light

The innovative design of the heated rear window and the integration of an FM and AM antenna func-tion make it possible to completely eliminate a rod antenna or roof fin in the base.

For a detailed description of the rear window, refer to the Entertainment “Rod-free antenna systemWING” Section.

2.3.2. Engine compartment

BMW X1 xDrive28i with the N20B20O0 was chosen as an example for illustrating the engine compart-ment.

Page 14: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 14/74

E84 Complete Vehicle2. Body

10

Engine compartment of BMW X1 xDrive28i with N20B20O0

Index Explanation

1 Cover for brake fluid reservoir

2 Expansion tank for engine coolant3 Grounding point4 Reservoir for washer fluid of the headlight and windshield washer system5 Positive battery connection point6 Electronics box

2.3.3. Doors

The doors meet the more stringent side impact requirements in the USA. Additional side reinforce-ment, including in the front doors, prevents the doors from opening during impact. The rear doors are

also equipped with an additional strut, which is already being used in other model series.A “crash pad” in the door trim panel in the form of integrated ribs reduces the occupant load in thechest area by moving the pelvis up early on. These measures are important for the 5* Euro NCAP rat-ing.

Page 15: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 15/74

E84 Complete Vehicle2. Body

11

Door trim panel

The door trim panel has the following features:

• Storage offered in the door (cup holders)• An integrated crash pad and a flexible attachment system have been incorporated into the trim

panel• The new design line in the interior is accented by the color and material separation between

the top end moulding and the body of the door.• The two-tone scheme from the cockpit continues throughout the entire interior towards the

rear.

Door trim panels, left

Page 16: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 16/74

E84 Complete Vehicle2. Body

12

2.3.4. Exterior mirrors

Exterior mirrors incorporate LED turn signal repeater

The side turn signal repeaters use LEDs and are integrated in the exterior mirror.

2.3.5. Tailgate

The tailgate is made of steel and designed as a single piece. The rear window is glued and cannot beopened separately.

The tailgate can be opened by pressing the button located above the rear license plate.

Page 17: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 17/74

E84 Complete Vehicle2. Body

13

BMW X1 tailgate

2.3.6. Exterior lights

Headlights

The BMW X1 offers the following headlight versions:

• Halogen headlight are standard equipment on the sDrive28i and xDrive28i.

• Bi-xenon headlights coupled with parking light rings are standard on xDrive35i and optional onsDrive28i and xDrive28i.

Page 18: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 18/74

E84 Complete Vehicle2. Body

14

The fog lights are already integrated as standard in the bumper.

BMW X1 halogen headlight

Index Explanation

1 High beam headlight2 Low beam headlight3 Turn indicator

Note: For the US market the eyebrows on the standard halogen headlights are chrome-plated insteadof having frosted glass.

The design of the optional bi‐xenon headlights has been modified. The side lights and the daytimedriving lights are now supplied with power from LEDs. The LEDs can be operated in two power stages.If they are activated at full power, they are daytime driving lights. For side lights roughly 10 % of theirpower is dimmed.

BMW X1 bi-xenon headlight

Index Explanation

1 Daytime driving lights/parking light rings2 Low beam headlight/high beam headlight/cornering light3 Turn indicator

Page 19: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 19/74

E84 Complete Vehicle2. Body

15

Rear lights

The rear lights in the basic version of BMW X1 are equipped with bulbs.

The tail light function is achieved using two extra wide LED optical fibers each, which accentuate theL-shape of the rear lights across both light chambers.

BMW X1 rear lights

Index Explanation

1 Turn indicator (bulb)

2 Brake force display (bulb)3 Tail light (LED tubes)4 Reverse light (bulb)

Page 20: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 20/74

E84 Complete Vehicle2. Body

16

The brake light function is realized with the use of 2 bulbs (which are located just behind the LEDtubes)

Two brake light bulbs located just behind the tail light LED tubes.

The rear reflectors are integrated in the bumper as a separate unit.

2.4. Interior

2.4.1. Front seats

The BMW X1 is offered with basic seats and sports seats. Both versions are also available with electri-cally adjustable functions. The side airbag is integrated in the front seats. What is new is that the stan-dard seat height adjustment in the basic version also allows the front passenger to optimally adjust theseat position. Widening the head restraints underscores the X-character of the seats.

2.4.2. Rear seats

The rear seat is designed for three people. The three-part, foldable rear seat backrest is separated at aratio of 40:20:40. The right backrest part and the center backrest part can be folded down individually.The left backrest part is coupled with the center backrest part and cannot be folded separately.

All backrest parts can be adjusted in eleven stages at angles between 1° and 31°. This makes it possi-ble to achieve a particularly comfortable seat position as well as provides a cargo position for the trans-port of larger objects.

The center backrest can be folded down separately thus creating a large through-loading openingwhile at the same time permitting the outer seats to be used.

Page 21: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 21/74

E84 Complete Vehicle2. Body

17

Rear seat bench

Index Explanation

1 40 %2 20 %3 40 %

2.4.3. Panorama glass roof

In comparison to a conventional slide/tilt sunroof, the panorama glass roof with its enlarged glass sur-face makes a positive contribution to the vehicle's interior appearance and sense of space. A two-sec-

tion electrically movable sliding trim enlarges the glass portion. The electrically movable sliding trimand the resulting elimination of the handle recess have an additional positive effect on the appearanceof the interior. The electrically movable sliding trim now appears as a homogenous area in the interiordesign.

Page 22: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 22/74

E84 Complete Vehicle2. Body

18

Panorama glass roof

The panorama glass roof is a slide/tilt sunroof system running on the inside with a fixed rear glass roof.The front glass roof and the sliding trim can be moved electrically and are controlled via a switch in theroof function center.

For further information on the panorama glass roof, refer to the Owner's Manual for the BMW X1 vehi-cle, as well as the product information for the BMW 3 Series Sport Wagon.

2.4.4. Luggage compartment

The luggage compartment volume is approx. 410 l in normal position (25°) and, depending on the po-sition of the rear seat system, up to 480 l in the cargo position (1°).

Position of the rear seat system

Page 23: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 23/74

E84 Complete Vehicle2. Body

19

Index Explanation

1 Normal position (25°)2 Cargo position3 Luggage compartment floor position

The area for accommodating numerous recreational and everyday objects is expanded through a sec-ond loading level below the luggage compartment floor.

Additional information on the functional space concept is available in the Owner's Manual for the BMWX1 vehicle.

2.5. Safety systems

2.5.1. Active safety

The following systems contribute to the active vehicle safety of the BMW X1:

• Dynamic cruise control• High beam assistant• Daytime driving lights• Cornering light• Brake force display

A detailed description of the listed systems is available in the Electrical Systems section and in theOwner's Manual for the BMW X1.

Page 24: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 24/74

E84 Complete Vehicle2. Body

20

2.5.2. Passive safety

The following airbags are used in the BMW X1:

Illustration of the airbags in the BMW X1

Index Explanation

1 Driver and front passenger airbag

2 Pelvis/thorax airbag3 Head airbag for front and rear occupants

Page 25: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 25/74

E84 Complete Vehicle3. Powertrain

21

3.1. Engine versions

With the special engine versions that are also being offered for the BMW X1, the BMW Group wantsto ensure and expand its leading position with respect to dynamics at reduced consumption and im-proved operating efficiency.

For the market introduction, the following engine versions will be offered:

Model Engine Transmission

BMW X1 sDrive28i AT N20B20O0 GA8HP45ZBMW X1 xDrive28i AT N20B20O0 GA8HP45ZBMW X1 xDrive35i AT N55B30M0 GA6HP19TU

3.1.1. Engine N20

The engine has the following features in the BMW X1:

• N20 performance is comparable to the N52 six cylinder• Less weight N20 = 324 lbs, N52 = 354 lbs• Better fuel economy and lower emissions than N52• TVDI (Turbo Valvetronic Direct Injection)• 3rd generation Valvetronic with new intermediate levers

• Map controlled (pendulum-slide) oil pump• TwinScroll exhaust turbocharger• Positive crankshaft offset• High-pressure injection (HDE) with solenoid valve injectors (as N55)

3.1.2. Engine N55

The adaptations of the 6-cylinder gasoline engine to the installation space of the BMW X1 are relative-ly minor.

Here is a list of the major features:

• One exhaust manifold with catalytic converter near the engine, for cylinder groups 1-3 and 4-6with stainless steel exhaust system

• TwinScroll exhaust turbocharger

• TVDI (Turbo Valvetronic Direct Injection)• Map controlled (Duroplast-slide valve) oil pump• High-pressure injection (HDE) with solenoid valve injectors

Page 26: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 26/74

E84 Complete Vehicle3. Powertrain

22

3.2. Transfer case

The transfer case is described in Chassis Section.

3.3. Automatic transmission

3.3.1. GA6HP19TU

The 6HP19TU automatic transmission is installed in the xDrive35i in combination with the N55 engine.The 6-speed automatic transmission 6HP19, clearly improved gearshift dynamics are achieved withthis technical revision. In addition, a more stable regulation of the converter lockup clutch leads to im-proved shifting comfort, in particular at low temperatures. This contributes to consumption reduction.

Note: Because the 6HP19TU automatic transmission is not designed to perform the MSAfunction the Auto Stop Start feature is not available on the xDrive35i.

3.3.2. GA8HP45Z

The GA8HP45Z is installed in both the sDrive28i and the xDrive28i in combination with the N20 en-gine. The transmission family GA8HP refers to the GA8HP45Z eight forward gears and one reversegear. This transmission is built by ZF and its rated to 450 Nm of maximum torque

The GA8HP45Z is a new development which gradually superseded the established GA6HP19ZTU 6-speed automatic transmissions.

Highlights when compared to the GA6HP transmission:• Significantly enhanced spontaneity of the gears shifts• Greater driving and shifting comfort as a result of smaller gear jumps• Higher control precision of the converter lock-up clutch at low engine loads• High power transmission of the converter lock-up clutch• Reduced fuel consumption (-5 to -6%)• Equipped with a hydraulic pressure accumulator to perform the MSA function

For more information regarding the GA8HP45Z automatic transmission refer to the ST1106F25 Complete Vehicle training material available on ICP and TIS. And for additional infor-mation regarding the MSA function refer to the ST1113 F30 Complete Vehicle “Powertrain”training material available on TIS and ICP.

3.3.3. Automatic engine start-stop function

With the market introduction of the E84 the automatic engine start-stop function MSA is installed asstandard, with the exception of the BMW X1 xDrive35i, as MSA is only available in all models with a 8-speed automatic gearbox (GA8HP).

Page 27: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 27/74

E84 Complete Vehicle3. Powertrain

23

Automatic transmission (GA8HP)

The automatic engine start-stop function switches off the engine when the vehicle is brought to astandstill, the selector lever remains in the D position, and the driver presses the brake pedal to holdthe vehicle at a standstill. This means that the car does not use any fuel when it is at a standstill. Whenthe driver releases the brake pedal again, the engine is automatically restarted and the driver can con-tinue driving.

Alternatively, the driver can move the selector lever from the "D" to the "P" position and release thebrake pedal. The engine remains switched off. The engine is automatically started as soon as the driv-er moves the selector lever to the D position.

The operating logic of the automatic engine start-stop function for vehicles with automatic transmis-sion is known from the F30.

3.3.4. ECO PRO modeECO PRO mode is standard equipment in all BMW X1 models

E84 driver assistance system operating facility

Index Explanation

1 ECO PRO button

The ECO PRO mode supports the driver in adopting a consumption-optimized driving style and re-duces fuel consumption through intelligent control of energy and A/C management.

Page 28: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 28/74

E84 Complete Vehicle3. Powertrain

24

Essentially the following measures help to reduce fuel consumption:

• The driver is supported in adopting an optimized-consumption driving style by means of analteration of the accelerator pedal characteristic and the shift program in automatic transmis-sions.

• The heating and air-conditioning system (IHKA) is placed in ECO PRO mode. Here the A/C system operates at reduced air drying and cooling. If the required temperature can beachieved without cold production, the A/C compressor is switched off. During heating modethe engine operating mode with increased heat dissipation is to the greatest possible extentdispensed with and the electric auxiliary heater is operated at lower power.

• The driver is prompted by various displays to adopt an optimized-consumption driving styleand is supported in optimizing their driving style.

Depending on the driving style consumption savings of up to 15 % or an average of 8 % can be

achieved by these measures.Upon activation of ECO PRO mode the automatic engine start-stop function MSA only used in thesDrive28i and xDrive28i is activated unless it has been manually deactivated beforehand.

E84 displays of ECO PRO mode in the CID

Page 29: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 29/74

E84 Complete Vehicle3. Powertrain

25

E84 displays of ECO PRO mode in instrument cluster without CID

Index Explanation

A ECO PRO ActiveB ECO PRO Not Active in stand by mode

(example: transmission sport/manual mode selected, heavy acceleration, etc.)

3.4. Final driveThe main goal during the development of the final drive for the BMW 1 Series and BMW 3 Seriesand now also for the BMW X1 was a considerable improvement in efficiency that will lead to a corre-sponding consumption reduction in the vehicle. This lead to a new final drive generation called “L axledrive” (L = friction-optimized).

3.4.1. Rear axle final drive

For the first time, double helical ball bearings are used in the rear axle final drives, thus significantly re-ducing the operating temperature, which has a positive effect on function and service life. At the sametime, oil flow losses are reduced considerably. The gearing was also adapted to the modified displace-ment behavior as well as optimized with regard to efficiency.

In addition, the torque capacity of the rear axle final drives HAG168L and HAG188L was increased by10%. For acoustic reasons, the housing of the rear axle final drive is still designed as a spheroidal castpart.

With regard to the improved consumption concept of the driving performance dynamics, a specificallydeveloped rear axle final drive hypoid gear set is available for each engine/gearbox combination. Duringthe design of the hypoid gear sets, particular attention was paid to achieving the vehicle acoustics ob- jectives.

3.4.2. Front axle differential

Reducing the power loss was also an important goal during the development of the front axle differ-entials, coupled with the specification to reduce fuel consumption and weight differences betweenrear wheel and four-wheel drive to a minimum. In order to be able to use common parts, identical angu-lar-contact ball bearings are used as in the rear axle final drive with the same positive result.

Page 30: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 30/74

E84 Complete Vehicle3. Powertrain

26

3.5. Output shafts, front axle

The front output shafts transfer the torque to the front wheels. The movement of the assemblies (en-gine/ transmission, bearings, rear axle) along with the spring travel of the wheels and angle changesin the drivetrain must be balanced out during this process. The front output shafts in an xDrive vehi-cle must take up large deflection angles caused by the steering angle at the wheel hubs. The outputshafts must also be capable of transferring the maximum torque applied to them.

Up till now, output shaft journals with longitudinal splines have been used for the axle to wheel hubconnection. This connection is made by machining spur gears on both the axle and the wheel hubmating surfaces. When these components are then torqued to specifications the result is comparableto the conventional spline method. This system (first introduced in the US with the F25 X3) simplifiesthe installation of the drivetrain at the assembly plant and reduces manufacturing costs.

Page 31: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 31/74

E84 Complete Vehicle3. Powertrain

27

E84 front output shaft to wheel hub connection

Index Explanation

A Conventional output shaftB Output shaft with spur gear connection1 Front output shaft, with spur gear (wheel side)2 Castle nut

Page 32: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 32/74

E84 Complete Vehicle3. Powertrain

28

Index Explanation

3 Front output shaft, with spur gear (welshed)4 Retaining screw5 Output shaft with spur gear connection6 Mating spur gear connection at wheel hub

Cutaway view of the new front axle spur gear connection to the wheel hubs

Page 33: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 33/74

E84 Complete Vehicle4. Chassis

29

Since there are two generally different powertrain versions for the BMW X1 (sDrive and xDrive), thechassis layout also differs.

4.1. Chassis

4.1.1. Chassis components

BMW X1 chassis components

Index Explanation

1 Front axle2 Wheels/tires3 Rear axle4 Brakes5 Steering6 Suspension/damping

Page 34: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 34/74

E84 Complete Vehicle4. Chassis

30

4.1.2. Front axle

A double-pivot spring strut front axle in the BMW X1 allows for the best possible coordination of kine-matics with regard to particularly good vehicle agility and good driving dynamics.

BMW X1 sDrive double-pivot spring strut front axle with trailing links.

Index Explanation

1 Engine mount

2 Anti-roll bar link3 Spring strut4 Swivel bearing (Aluminum)5 Wishbone6 Trailing links (Aluminum)7 Anti-roll bar8 Front axle support (Aluminum)

Page 35: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 35/74

E84 Complete Vehicle4. Chassis

31

In the sDrive28i with the standard rear wheel drive, a double-pivot spring strut front axle that is madeof aluminium and fitted with trailing links. This design of the front axle is identical to that used in theBMW 1 Series and 3 Series. The aluminium material of trailing arms and swivel bearings (forged) re-duce the unsprung masses. The aluminium front axle support (forged from various individual parts) al-so reduces the front axle load and thus permits a more favorable weight distribution while at the sametime providing optimum stiffness of the front end. The height adjustment of the BMW X1 with respectto the BMW 3 Series Sport Wagon is implemented by a modification to the swivel bearing.

The most important data of the BMW X1 front axle is compiled in the following table.

Standard wheel R17 7.5Jx17 EH2+Standard tire 225/50 R17 94H (RSC)Rim offset 34 mm (1.33 in)Toe-in 14‘Track width 1500 mm (59.1 in)Camber -18‘ ± 25‘Camber difference angle Max. 30'Overall toe-in -14‘ ± 10‘Toe difference angle 1° 37‘ ± 30‘Caster angle 6° 26‘

Page 36: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 36/74

E84 Complete Vehicle4. Chassis

32

BMW X1 xDrive double-pivot spring strut front axle with leading links.

Index Explanation

1 Engine mount2 Anti-roll bar link3 Spring strut4 Swivel bearing

5 Leading links (Steel)6 Wishbone7 Anti-roll bar8 Front axle support

Page 37: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 37/74

E84 Complete Vehicle4. Chassis

33

In the xDrive28i and xDrive35i with four-wheel drive, a double-pivot spring strut front axle that is madeof steel and fitted with leading links. Minor changes to realize the height adjustment were made in thearea of the link bearing supports.

Standard wheel R17 7.5Jx17 EH2+Standard tire 225/50 R17 94H RSCRim offset 34 mm (1.33 in)Toe-in 14‘Track width 1501 mm (59.1 in)Camber -27‘ ± 25‘Camber difference angle Max. 30'Overall toe-in -14‘ ± 10‘Toe difference angle 1° 38‘ ± 30‘Caster angle 6° 35‘

Page 38: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 38/74

E84 Complete Vehicle4. Chassis

34

4.1.3. Rear axle

Rear axle BMW X1, xDrive/sDrive

Page 39: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 39/74

E84 Complete Vehicle4. Chassis

35

Index Explanation

1 Compression strut2 Toe link3 Camber link4 Rear axle support5 Anti-roll bar6 Wishbone7 Control arm8 Trailing arm

The most important data of the BMW X1 rear axle is compiled in the following table.

Standard wheel R17 7.5Jx17 EH2+Standard tire 225/50 R17 94H RSCRim offset 34 mm (1.33 in)Wheelbase 2760 mm (108.7 in)Track width 1529 mm (60.2 in)Camber -1° 30‘ ± 5‘Camber difference angle 0° ± 30‘Overall toe-in 18‘ ± 4‘

Driving axle angle 0° ± 12‘

A five-link rear axle HA5 as known from the E8x and E9x is installed. This design features a particularlyprecise wheel control and offers excellent dynamic properties with regard to the following:

• Directional stability

• Load reversal behavior

• Self-steering response

• Lane change stability

• Transition behavior from cornering to straight-running stability (steering)

The HA5 in the BMW X1 offers very good tire comfort due to a double-elastic mounts and a large sup-port base of the rear axle. Furthermore, the design principle of the HA5 does not require a lot of instal-lation space and has a low weight.

The five-link rear axle is mainly derived from a twin control arm rear axle with the track rod located inthe rear, whereby the upper and lower A-arms were replaced by two individual arms each. The advan-tage of this is that, regardless of the installation space situation, it is possible to freely specify the ef-

Page 40: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 40/74

E84 Complete Vehicle4. Chassis

36

fective virtual kinematics point. The result of this design coordination is elasto-kinematics propertiesthat permit exact wheel control across significant spring travel, which is required for the desired drivingproperties. In addition, due to small lever arms, the rear axle barely reacts to interferences.

The large support base for toe and camber on the wheel carrier side and the extremely torsionally rigidtrailing arms, as well as the stiff rear axle support and the connection to the body by means of com-pression struts ensure highly precise wheel control. This is the prerequisite for agile overall coordina-tion of the BMW X1. The use of high-torque engines as well as the use of run flat tires were taken intoconsideration by the large rear axle support base; this concept is very important both for driving prop-erties as well as for good acoustic insulation.

Many of the rear axle components of the BMW 3 Series Sport Wagon are being adopted for the BMWX1. Only the hub carrier and the upper wishbone were redesigned for the height adjustment necessaryin the BMW X1. For the rear axle support, only the rear crossbridge with the connection for camber linkand toe link had to be redesigned; the remaining components are identical to the rear axle support inthe BMW 3 Series Sport Wagon.

The HA5 provides the best prerequisites for the particularly space-saving rear concept (location of rearseat position, fuel tank, and luggage compartment). Thus, a comparably large through-loading widthas well as ample leg room can be achieved in the rear.

4.1.4. Steering systems

Depending on the model and equipment, the following different steering systems are used in theBMW X1:

• Electric power steering with the parallel arrangement of the electric motor (sDrive28i only)without Servotronic

• Hydraulic steering with an 18.5 steering ratio• Servotronic (SA216), available only for hydraulic steering

The EPS in the BMW X1 makes a major contribution to the reduction of CO2 emissions due to the de-mand-oriented control of the assisted torque.

Electric power steering EPS is only offered in the sDrive28i rear wheel drive version.

The xDrive models for all other markets are offered with the hydraulic steering system adopted fromthe E8x and E9x.

Servotronic (SA216) is standard on the xDrive35i and available as an option on the xDrive28i.

4.1.5. Brakes

The BMW X1 is equipped with floating calliper brakes. The top model xDrive28i is the only model thathas a floating calliper brake in the frame construction at the front axle. All brake discs are ventilated.

Page 41: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 41/74

E84 Complete Vehicle4. Chassis

37

The following table provides an overview of the versions that are being used:

Model Front brakepiston Ø in mm Rear brake pis-ton Ø in mm Front brakedisc Ø inmm x thick-ness in mm

Rear brakedisc Ø inmm x thick-ness in mm

BMW X1 sDrive28i 57 44 312 x 24 300 x 20BMW X1 xDrive28i 57 44 330 x 24 300 x 20BMW X1 xDrive35i 57 44 348 x 30 336 x 22

4.1.6. Suspension/damping

The BMW X1 is only offered with conventional spring struts at the front and rear axle.

4.1.7. Wheels

The sDrive28i and xDrive28i are equipped with the ZRF Run-flat tires package as standard. The ZRFRun-flat tires package consists of tires with emergency running properties, 17 inch standard wheelsand the Extended Hump 2+ EH2+ rims, as well as the Run Flat Indicator.

The xDrive35i is standard equipped with 18 inch but 19 inch wheels are available as optional equip-ment.

This ZRF Run-flat tires package consists of the following:

• RSC tires with emergency running properties on an EH2+ rim• Tire pressure monitor• Elimination of spare wheel• Elimination of jack

4.2. Driving stability control systems

4.2.1. Dynamic Stability Control DSC

The familiar DSC Bosch 8+ is used in the BMW X1. It has to be observed here in particular that theDSC control unit in a BMW X1 with rear wheel drive is not identical to a DSC control unit from theBMW X1 with xDrive. The coordination of the DSC/DTC mode varies in the two different engine ver-sions.

The DSC sensor cluster is located below the left seat and consists of a longitudinal, transverse, andyaw rate sensor.

Page 42: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 42/74

E84 Complete Vehicle4. Chassis

38

Function Can be ac-tivated/de-

activated

DSC ON DTC DSC OFF

ABS EBV CBC MSR ASC XADB-X DSC XHDC

Brake drying Drive-off assistant Brake standby Fading support DBC DBS MBS

Symbols:

• = System active

• X = System with raised control thresholds

• = Can be activated or deactivated.

• Note: The table on the following page describes the acronyms.

The purpose of the table is to illustrate the functions of the driving stability control systems. The func-tional capability with regard to DSC/DTC for the BMW X1 xDrive was adopted from the BMW 3 SeriesxDrive and for the BMW X1 sDrive from the BMW Z4 sDrive and expanded for both with the tilt stabi-

lization logic system from the BMW X5 due to the higher position of the center of gravity.For the 6-cylinder models, the additional functions such as drive-off assistant, fading compensation,brake standby, and drying by applying brake are already available in the standard equipment.

As with F25 the BMW X1 xDrive models are also offered with the (optional) 2VG Performance Controlfunction (dynamic brake intervention), refer to Section 4.2.3 for more information. The DSC 8+ with itspulse-width-modulated activation for the analogue separator and intake valves allows for an analoguevalve characteristic, which permits sensitive pressure control. As a result, higher control comfort in allDSC functions as well as in the optional equipment Dynamic Cruise Control (DCC) is achieved.

Page 43: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 43/74

E84 Complete Vehicle4. Chassis

39

Function Description

ABS Anti-Lock Braking SystemEBV Electronic Brake Force DistributionCBC Corner Brake ControlMSR Engine Drag Torque ReductionASC Automatic Stability ControlADB-X Automatic Differential Lock/Brake X (special function for all-wheel drive vehicles)DSC Dynamic Stability ControlHDC Hill Descent ControlBrake dry-ing

When the windshield wiper is operating in continuouswipe mode, the wheel brakes are lightly applied against

the brake disc cyclically every 90 seconds in order to wipe off the water film.Drive-off assistant

This function provides assistance when driving off on uphill gradi-ents by temporarily maintaining brake pressure in the wheel brakes.

Brakestandby

The brake pads are applied against the brake disc whenthe accelerator pedal is released quickly thus reducing the

emergency braking stopping distance (by approx. 30 cm/100 km/h).Fadingsupport

If the braking effect diminishes, the driver is assisted by the fadingcompensation with additional pressure build-up of the DSC module.

DBC Dynamic Brake Control (see E60)DBS Dynamic Brake Support (see E60)

MBS Maximum Brake Support (see E60)

4.2.2. xDrive with transfer case

System design

The linked systems xDrive and DSC mainly consist of the components already known from the DSC:

• Controlled multi-disc clutch in the transfer case• DSC8+ module

• Longitudinal dynamics management• DSC sensor• Wheel speed sensors• Brake pressure sensor• Steering angle sensor• Brake fluid level switch• Brake light switch

Page 44: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 44/74

E84 Complete Vehicle4. Chassis

40

• DTC button• Motor position sensor for transfer case (incremental sensor)• Transfer case control motor (actuator)

Input/output xDrive/DSC

Input/output xDrive/DSC

Page 45: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 45/74

E84 Complete Vehicle4. Chassis

41

Index Explanation

1 Transfer case control unit (VTG)2 Transfer case clutch actuator3 Instrument cluster4 DSC sensor (rotational speed, lateral, and longitudinal acceleration sensor)5 Steering angle sensor6 Dynamic Stability Control (DSC) hydraulic unit7 Dynamic Stability Control (DSC) control unit8 RPA button (Not for US)9 HDC button

10 DTC button11 Brake fluid level switch12 Wheel speed sensor13 Electronic Transmission Control (EGS)14 Digital Motor Electronics (DME)

Page 46: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 46/74

E84 Complete Vehicle4. Chassis

42

Mechanical design of the transfer case (ATC 350)

Index Explanation

1 Connection to the front axle2 Connection to the gearbox (clutch package)3 Connection to the rear axle

4 Transfer case control unit5 Control motor for actuating the multi-disc clutch

New features in the xDrive

A combination of actuator and xDrive control unit is directly installed on the transfer case of the BMWX1. The control unit is now referred to as "transfer case".

Page 47: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 47/74

E84 Complete Vehicle4. Chassis

43

In comparison to the previous one (ATC 300), the new transfer case (ATC 350) features a spur gearunit which makes better use of the installation space. While previous transfer boxes used to have a"coding and service resistor", it has been eliminated in the new transfer boxes. The compensation of the production tolerances in the transfer case which was previously achieved by the coding resistor isnow accomplished via an internal classification that can also be found on the type plate.

Type plate

Index Explanation

1 BMW part number2 Revision index3 Classification4 Magna Powertrain part number5 Production date (day/month/year)

6 Transfer case type7 Serial number

The separate oil pump in the transfer case has also been eliminated, which leads to an improvement inefficiency. Adequate lubrication and cooling of the transfer case components is achieved through anoil supply function of the power transmission system (spur gear unit). The transformation of the radialmovement into an axial movement in order to operate the multi-disc clutch has changed slightly.

Page 48: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 48/74

E84 Complete Vehicle4. Chassis

44

Activation of the multi-disc clutch

Index Explanation

A Radial movementB Axial movement1 Balls (3x)2 Ball ramp3 Worm wheel with ball ramp4 Worm gear

Page 49: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 49/74

E84 Complete Vehicle4. Chassis

45

Oil supply

Oil supply

Index Explanation

1 Connecting pipe of front axle gearbox input shaft and rear axle gearbox inputshaft

2 Connection of rear axle gearbox input shaft3 Inner oil duct4 Outer oil duct

Function

The actuator with the integrated control unit of the transfer case activates the multi-disc clutch in thetransfer case. In the normal function, the target torque request by the VTG is received by the DSC viathe interface. The DSC has the VTG software and converts the target torque request (0-1400 Nm) viaa characteristic into target angle information on the control motor drive.

Page 50: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 50/74

E84 Complete Vehicle4. Chassis

46

Drive torque

Index Explanation

A Engine/transmission drive torqueB Portion of rear axle drive torqueC Portion of front axle drive torque

4.2.3. Performance Control

The customer can order the "2VG performance control" optional equipment for the BMW X1 as partof the ZMP M Sport Package (xDrive vehicles only). Already known from F25 X3, this DSC functionfor the xDrive in the BMW X1 is a dynamic intervention function that can be neither switched on or off.The principle for enhancing the agility of the xDrive vehicle is similar to the Dynamic Performance Con-trol function in the BMW X6. Variable torque distribution on the rear axle is achieved here by the dy-namic performance control. During performance control, the inner cornering rear wheel is braked dur-ing sporty driving and the generated braking torque is at the same time compensated through an in-tervention in the engine load control system. This generates a driving torque that reduces the steeringangle and the tendency of an xDrive vehicle to understeer.

Page 51: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 51/74

E84 Complete Vehicle4. Chassis

47

In order to avoid increased brake wear, the function is switched back in stages between speeds of 60 Km/h (37 mph) and 120 km/h (75 mph) and at speeds of 120 km/h (75 mph) and higher this agilityfunction is no longer used.

Understeering

In an understeering driving situation, xDrive shifts more drive torque to the rear axle as the understeer-ing tendency increases. This allows the front axle to build up more traction which reduces understeer-ing.

At the same time the Performance Control (SA 2VG) ensures(through braking intervention at theinner rear cornering wheel and by increasing the drive torque of the engine) that the vehicleadopts a neutral drivability without slowing it down.

E84 xDrive and Performance Control intervention during understeering

Index Explanation

red arrow Performance Control interventiongreen arrow xDrive intervention1 On the approach to the bend, xDrive adjusts the distribution of drive torque so

the emphasis is slightly towards the rear2 and 3 During cornering, xDrive shifts more drive torque to the rear axle; Performance

Control counteracts understeering4 As the understeering tendency reduces, more drive torque is directed to the

front axle and the intervention by Performance Control diminishes5 xDrive reestablishes the standard distribution, intervention by Performance

Control is no longer required

Page 52: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 52/74

E84 Complete Vehicle4. Chassis

48

Oversteering

In an oversteering driving situation, xDrive distributes the drive torque so that the load on the rear axleis reduced as much as possible.At the same time, the DSC ensures(through additional brake intervention at the outer rear wheelduring cornering) that the vehicle is quickly stabilized and that neutral drivability is restored.

E84 xDrive and Performance Control intervention in the event of oversteering

Index Explanation

red arrow Performance Control interventiongreen arrow xDrive intervention1 On the approach to the bend, xDrive adjusts the distribution of drive torque so

the emphasis is slightly towards the rear2 If an oversteering tendency exists, xDrive shifts more drive torque to the front

axle3 As the oversteering tendency increases, Performance Control (SA 2VG) further

stabilizes the vehicle through braking intervention at the outer rear wheelduring cornering4 As the oversteering tendency reduces, less drive torque is directed to the front

axle and the intervention by Performance Control diminishes5 xDrive reestablishes the standard distribution, intervention by Performance

Control is no longer required

Page 53: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 53/74

E84 Complete Vehicle4. Chassis

49

4.2.4. Dynamic Cruise Control (DCC)

The extension of the conventional speed control by a comfortable brake intervention known from theBMW 3 Series leads to an extended application range with the following new operation options:

• With the help of an "electronically controlled brake actuation" ECBA interface to the DSC, thevehicle speed is reduced in a considerably more dynamic manner via a brake intervention

• In the application range from 30 km/h (18 mph) to 250 km/h (155 mph), certain "hand throttlefunctions" are possible on the operating lever.

Page 54: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 54/74

E84 Complete Vehicle5. General Vehicle Electronics

50

5.1. Electrical system

The electrical systems of the BMW X1 correspond for the most part to the BN 2000 vehicle electri-cal system of the BMW 1 Series (E8x) and 3 Series (E9x) vehicles. The vehicle electrical system for ex-ample includes the junction box, the footwell module, and the roof function center as vehicle electricalsystem components with the already known functions.

The following items are new features or modifications compared to the BMW 1 Series BMW 3 Series:

• MOST- Car Information Computer (CIC), (refer to ST815 CIC training material for more informationon ICP and TIS)

• K-CAN- Top rear side view camera (TRSVC), refer to product information ST811 F01 Complete Vehi-cle for more information on ICP and TIS.

• PT-CAN- Transfer case, refer to xDrive with Transfer case in the Powertrain section.

Page 55: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 55/74

E84 Complete Vehicle5. General Vehicle Electronics

51

5.1.1. Bus systems

BMW X1 bus systems

Page 56: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 56/74

E84 Complete Vehicle5. General Vehicle Electronics

52

Index Explanation

ACSM Advanced Crash Safety ModuleCA Comfort AccessCAS Car Access SystemCIC Car Information ComputerCID Central Information DisplayCON ControllerDME Digital Motor ElectronicsDSC Dynamic Stability ControlDSC-SEN Dynamic Stability Control Sensor

DVD DVD changerEGS Electronic transmission controlEKPS Electronic fuel pump controlEPS Electric Power SteeringFLA High beam assistantFRM Footwell moduleFZD Roof function centerGWS Gear selector switchIHKA Integrated automatic heating/air conditioning system

JBE Junction Box ElectronicsKOMBI Instrument clusterPDC Park Distance ControlRAD2 Radio BMW ProfessionalSBFA Switch block, driver's sideSHD Panorama glass roof SINE Siren with tilt alarm sensorSMFA Driver's seat moduleSMC Stepper Motor ControllerSZL Steering column switch clusterTPMS Tire pressure monitoring systemTRSVC Top rear side view cameraTOP HiFi Top HiFi amplifierUSIS Ultrasonic interior movement detectorVTG Transfer case control unit

Page 57: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 57/74

E84 Complete Vehicle5. General Vehicle Electronics

53

5.1.2. Vehicle circuit structure

The vehicle circuit structure for the BMW X1 is mainly based on the proven wiring harness concept of the E8x and E9x.

The noteworthy features of the vehicle circuit structure are listed below:

• The multi-section customer-specific wiring harness, multi-section wiring harness for cockpit

• The use of fiber-optic in the MOST bus

• The alternator line is installed on the underbody

With the customer-specific wiring harness, it is still possible (in some markets) to retrofit additionalfunctions such as a telephone. By avoiding unnecessary interfaces and the implementation of a cus-tomer-specific wiring harness, an optimal product is created with regard to quality and weight.

5.1.3. Energy management

The energy management of the BMW X1 is divided into the following areas:

• Power management (PM)• Terminal control• Special energy functions

For a detailed description of energy management, refer to the product information for the E8x and E9xvehicles.

5.1.4. Installation locations of the system components

The following graphics show the installation locations of the BMW X1 system components.

Page 58: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 58/74

E84 Complete Vehicle5. General Vehicle Electronics

54

Installation locations of the system components in the BMW X1

Index Explanation

1 Digital Motor Electronics (DME)2 Exterior mirror, right3 Junction Box Electronics (JBE)4 Car Information Computer (CIC)5 Rain, light and precipitation solar sensor6 High beam assistant (FLA)7 Electronic fuel pump control

Page 59: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 59/74

E84 Complete Vehicle5. General Vehicle Electronics

55

Index Explanation

8 Ultrasonic interior movement detector9 Exterior mirror, left10 Switch block, driver's side11 Driver's seat module12 Footwell module13 Car Access System (CAS)14 Dynamic Stability Control (DSC)15 Transfer case control unit (VTG)16 Electronic transmission control (EGS)

17 Stepper motor controller (SMC-L)18 Electric Power Steering (EPS)19 Stepper motor controller (SMC-R)

Installation locations of the system components in the BMW X1

Page 60: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 60/74

E84 Complete Vehicle5. General Vehicle Electronics

56

Index Explanation

20 Steering column switch cluster21 Instrument cluster22 Central Information Display (CID)23 Roof function center24 Integrated automatic heating/air conditioning system (IHKA)25 Panorama glass roof control unit26 Park Distance Control (PDC)27 (Not for US)28 All-round vision camera (TRSVC)

29 Tire pressure monitoring (US)30 Combox31 Universal charger and hands-free unit (Not for US)32 DVD changer33 Top HiFi amplifier (TOP HiFi)34 Siren with tilt alarm sensor (SINE)35 Crash safety module (ACSM)36 Controller (CON)37 DSC sensor

5.1.5. System components

This section outlines some notes on the most important system components, which are known in partfrom BMW 1 Series and 3 Series (E8x/E9x) vehicles.

For further detailed information on the general vehicle electrical system in the BMW X1, refer to theE8x and E9x training material available on ICP and TIS.

Front/rear locking system

The front/rear locking system of the BMW X1 is identical to that of the BMW 3 Series (E9x).

For a detailed description of the locking system, refer to the product information for the BMW 3 Series(E9x).

Power distribution box

As with the E8x and E9x Series vehicles, the BMW X1 features two power distribution boxes. The frontpower distribution box is located on the junction box electronics to the right in the direction of travel,below the instrument panel.

The rear power distribution box is located in the luggage compartment directly below the second stor-age shelf and is fixed in place on the vehicle battery with two clips.

Page 61: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 61/74

E84 Complete Vehicle5. General Vehicle Electronics

57

Power distribution box in the luggage compartment of the BMW X1

Index Explanation

1 Safety battery terminal (SBK)2 Connector for high-current connections3 Power distribution box

5.1.6. Display and operating concept

The display and operating concept in the BMW X1 corresponds for the most part to the operating con-cept of the BMW 1 Series. The principle of "fewer switches facilitates logical operation" is retained inthe BMW X1.

The E84 LCI is equipped as standard with a storage compartment in the center of the dashboard. Forvehicles which have an optional navigation system, the Central Information Display (CID) is arrangedwith side chrome applications. The center console is flatter on the side facing the driver.

Other new features in the area of the interior equipment are:

• Electroplated trims for the gear selector switch and cup holder• Light switch with chrome wedge.

For a detailed description of the individual functions, refer to the product information for the BMW 1Series and 3 Series as well as the Owner's Manual for the BMW X1.

Page 62: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 62/74

Page 63: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 63/74

E84 Complete Vehicle5. General Vehicle Electronics

59

Two large instrument dials show the speed and RPM. A small instrument dial in the engine speed dis-play indicates the current fill level of the fuel tank.

The dials in the instrument cluster have different designs depending on the country, vehicle, and typeof engine.

All of the indicator lights are centrally located at the top between the two large instrument dials.

The LC display is also located in the center, between the two large instrument dials.

BMW X1 instrument cluster

Central Information Display (CID)

The Central Information Display (CID) is identical to the CID in the BMW 1 Series and 3 Series. As in allnew BMW models, operation also takes place via the central operating element, the controller.

For further information, refer to the Owner's Manual for the BMW X1 vehicle.

Heating and air conditioning unit

The BMW X1 comes standard with automatic 2-zone air conditioning system which is a further de-velopment of the heating and air conditioning unit installed in the BMW 1 Series and 3 Series. The airmass flow rate is increased due to fewer internal flow losses and the optimized fan wheel.

Page 64: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 64/74

E84 Complete Vehicle5. General Vehicle Electronics

60

5.1.7. Driver assist systems

Rearview cameraThe rearview camera system is installed in the tailgate to the right next to the tailgate lock and issealed with a rubber seal towards the tailgate.

Rearview camera

Index Explanation

1 Rearview camera

The rearview camera is activated automatically together with the Park Distance Control (PDC) by en-gaging the reverse gear or manually by operating the button in the driver assist systems controls.

In the Central Information Display (CID), the wide angle color image of the surroundings directly behindthe vehicle is shown. The graphic images show the pre-calculated space needed for parking and ma-neuvering relative to the current steering wheel position and assist the driver during parking.

The color obstacle marks in the camera image help the driver (in addition to the PDC warning sound)to pay attention to the obstacles during parking and maneuvering.

For further information, refer to the rearview camera in the BMW X5 E70 training material available onTIS and ICP.

Daytime driving lights

The BMW X1 is equipped with the typical BMW daytime driving lights that are integrated in the coronarings. The BMW X1 therefore meets the daytime driving lights requirements in all markets.

The daytime driving lights function is activated as standard when the vehicle is delivered and is imple-mented with an H8 bulb.

Page 65: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 65/74

E84 Complete Vehicle5. General Vehicle Electronics

61

Daytime driving lights

Adaptive headlights

The adaptive headlights adjust their dynamics to the particular driving situation depending on thespeed. On country roads at speeds from 60 to 100 km/h (37 to 62 mph), the headlights provide op-timum curve area illumination and directly follow the driving dynamics of the vehicle. At interstatespeeds, the control reduces the dynamic portions again, since continuous guidance and direction of movement are required.

For further information, refer to the product information for the adaptive headlights in the current BMW5 Series and in the BMW X1 Owner's Manual.

High beam assistant

As with the E8x and E9x Series vehicles, the high beam assistant is activated via the stalk on the steer-ing column.

For further information, refer to the product information for the high beam assistant in the BMW 5 Se-ries and in the BMW X1 Owner's Manual.

Page 66: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 66/74

Page 67: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 67/74

E84 Complete Vehicle5. General Vehicle Electronics

63

Note: ZTP will delete 7H9 (Basic Bluetooth and USB ) from the order but will add 6UH and7KB to the order.

The operating concept of the Car Information Computer is identical to the CIC installed in the BMW 1Series and 3 Series.

Controller

A detailed description of the main menu and the selection of the individual functions are outlined in theBMW X1 Owner's Manual.

Furthermore, you can find a detailed description of the system in the F01 Audio System training mate-rial available on TIS and ICP.

5.2.2. Entertainment

Rod-free antenna system “WING”

Due to the rear window layout “WING” patented by BMW, it is possible to omit the rod antenna. Thislayout was introduced for the first time in the BMW X3 (F25). The FM antennas are created from thesemi-circular heating zone that follows the rear wiper. The medium wave antenna consists of the winglayout to the left in the direction of travel. Other services such as FBD are accommodated in the rightwing.

Due to the completely new arrangement into semi-circular heating conductors and the right and left“WINGS,” an adequately large area can be gained for the critical medium wave antenna. This layoutcan also ensure a good defrosting and view out the rear window even for small rear windows as in theBMW X1. At the same time, this arrangement produces a powerful medium wave antenna.

The antenna amplifier is centrally located, whereby additional filters are installed for the integration of the medium wave antenna in the wing layout.

Page 68: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 68/74

E84 Complete Vehicle5. General Vehicle Electronics

64

Antenna window system “WING”

Index Explanation

1 Heating field connection2 FM antenna3 AM antenna field4 Heating field5 Antenna Diversity Module AM/FM/FBD6 Antenna telephone, GPS7 DAB-III-Band antenna field (Not for US)8 FM2 antenna field9 FM1, FBD antenna field10 Heating field connection

Speaker and amplifier

The speakers and amplifiers in the BMW X1 are identical to those in the BMW 1 Series. An electro-dy-namic planar speaker is used additionally as a central speaker in the instrument panel of the BMW X1,which is installed in the roofliner as in the BMW 3 Series Sport Wagon.

The two bass speakers are positioned under the front seats, thus allowing an even bass sound in theentire vehicle. The required housing volume is achieved as in the BMW 1 Series by connecting thebass speakers to the side sills.

Page 69: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 69/74

E84 Complete Vehicle5. General Vehicle Electronics

65

Audio systems

The following three audio systems are offered:

HiFi Sound System

Eight speakers are used in the HiFi sound system. The two bass speakers that are considerably morepowerful compared to a basic stereo system are the core element here. The goal of the HiFi soundsystem is to evenly distribute the sound to all seats. In the front doors, tweeters are added to the sys-tem. As a result, the tweeter range output is greatly improved. Due to the external HiFi amplifier, thebass speakers can be activated independently of the front mid-range speakers through two 40 Woutput stages. The activation and increased number of available filters allow significantly more linearequalizing than is possible with this system.

BMW X1 with HiFi sound system

Index Explanation

1 Headunit – Radio 2, CIC Professional2 Left/right front tweeter in the mirror triangle3 Left/right front mid-range speakers in the door trim panel4 Bass speaker underneath the left/right front seat5 Left/right rear tweeters/mid-range speakers in the luggage

compartment shoulder6 Left rear HiFi amplifier in the luggage compartment

HiFi Sound System Professional Logic 7

The Harman Kardon HiFi System Professional Logic 7 (SA 688) is further optimized compared to thestandard system. The (11 speaker) HiFi system allows the output of surround information included inthe stereo signal in 5.2 format while using surround algorithm Logic 7. With the planar speaker (cen-

Page 70: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 70/74

E84 Complete Vehicle5. General Vehicle Electronics

66

ter speaker), the sound pattern can thus be centered in the middle of the instrument panel. The ex-perience is like sitting directly in front of an orchestra. The mid-range speakers and tweeters with alu-minium membranes that were further improved compared to the HiFi system provide a significantlymore differentiated sound pattern. The influence of driving noise is compensated by speed-depen-dent equalizing in small stages in the low-frequency range.

BMW X1 with HiFi System Professional Logic 7

Index Explanation

1 Planar speaker centrally located in the instrument panel2 Headunit – Radio 2, CIC Professional3 Left/right front tweeter in the mirror triangle4 Left/right front mid-range speakers in the door trim panel5 Bass speaker underneath the left/right front seat6 Left/right rear mid-range speakers in the luggage compartment shoulder7 Left/right rear tweeters in the luggage compartment shoulder8 Top left rear HiFi amplifier in the luggage compartment

Note : The Harman Kardon HiFi System Professional Logic 7 (SA 688) is available as an op-tion.

External connections

The USB connection for data output as well as the AUX socket are located in the center console, di-rectly next to the storage compartment.

Page 71: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 71/74

E84 Complete Vehicle5. General Vehicle Electronics

67

USB connection, data output

Index Explanation

1 AUX IN connection2 USB connection

The USB connection for data import is located on the left in the glove compartment, directly next tothe glove compartment door lock.

USB connection, data import

DVD changer

The DVD changer is integrated vertically into the left rear of the luggage compartment in the wheelarch recess.

Page 72: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 72/74

E84 Complete Vehicle6. Service Instructions

68

6.1. Condition Based Service (CBS)

The BMW maintenance system Condition Based Service (CBS) also ensures traffic and operationalsafety of the vehicle in the BMW X1.

A detailed description of the system and the operation with the controller is available in the documen-tation for the BMW 1 Series and BMW 3 Series as well as in the Owner's Manual for the BMW X1 vehi-cle.

6.2. Diagnosis and program accessThe OBD II diagnostic socket in the BMW X1 is located on the driver's side, directly below thevehicle's A-pillar.

Diagnostic socket

Page 73: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 73/74

Page 74: BMW X1 E84 Complete Vehicle

8/11/2019 BMW X1 E84 Complete Vehicle

http://slidepdf.com/reader/full/bmw-x1-e84-complete-vehicle 74/74